1. ITV Report

We test the world's largest underground trampoline... in a north Wales slate cavern

The world's biggest underground trampoline opened in a slate cavern in Gwynedd today.

The trampoline has taken 4,500 man hours to build in a cave which measures 100ft by 60ft.

LED lights are used in the caves to create colour changing scenes Credit: Llechwedd Slate Caverns

Rob Shelley has been to see if it will give the local tourist trade a bounce...

Warning: The report contains flashing lights

The surreal experience of Bounce Below cannot be matched as there’s nothing like it anywhere else on earth. It’s essentially a ginormous underground playground and an amazing way to experience a subterranean world in a way never before possible.

Rob Shelley gives the trampoline a try

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